/*
 *  tracker/TrackerSettingsDatabase.cpp
 *
 *  Copyright 2009 Peter Barth
 *
 *  This file is part of Milkytracker.
 *
 *  Milkytracker is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Milkytracker is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Milkytracker.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 *  TrackerSettingsDatabase.cpp
 *  MilkyTracker
 *
 *  Created by Peter Barth on Tue Mar 15 2005.
 *
 */

#include "BasicTypes.h"
#include "TrackerSettingsDatabase.h"
#include "XMFile.h"

TrackerSettingsDatabase::TrackerSettingsDatabase (const TrackerSettingsDatabase& source) :
    dictionary(source.dictionary),
    maxKeys(source.maxKeys)
{
}

TrackerSettingsDatabase& TrackerSettingsDatabase::operator =(const TrackerSettingsDatabase& source)
{
    if (this != &source)
    {
        dictionary = source.dictionary;
        maxKeys = source.maxKeys;
    }

    return *this;
}

void TrackerSettingsDatabase::store(const PPString& key, const PPString& value)
{
    dictionary.store(key, value);
}

void TrackerSettingsDatabase::store(const PPString& key, const pp_uint32 value)
{
    dictionary.store(key, value);
}

bool TrackerSettingsDatabase::hasKey(const PPString& key)
{
    return dictionary.restore(key) != NULL;
}

PPDictionaryKey* TrackerSettingsDatabase::restore(const PPString& key)
{
    return dictionary.restore(key);
}

bool TrackerSettingsDatabase::serialize(XMFile& f)
{
    if (f.isOpenForWriting())
    {
        if (maxKeys >= 0 && dictionary.size() > maxKeys)
            return false;

        f.writeDword(dictionary.size());

        const PPDictionaryKey* theKey = dictionary.getFirstKey();

        while (theKey)
        {
            f.writeDword(theKey->getKey().length());
            f.write(theKey->getKey(), 1, theKey->getKey().length());

            f.writeDword(theKey->getStringValue().length());
            f.write(theKey->getStringValue(), 1, theKey->getStringValue().length());

            theKey = dictionary.getNextKey();
        }

    }
    else
    {
        pp_int32 size = f.readDword();

        if (maxKeys >= 0 && size > maxKeys)
            return false;

        for (pp_int32 i = 0; i < size; i++)
        {
            pp_int32 len = f.readDword();
            char* keyBuffer = new char[len + 1];
            memset(keyBuffer, 0, len + 1);
            f.read(keyBuffer, 1, len);

            len = f.readDword();
            char* valueBuffer = new char[len + 1];
            memset(valueBuffer, 0, len + 1);
            f.read(valueBuffer, 1, len);

            store(keyBuffer, valueBuffer);

            delete[] valueBuffer;
            delete[] keyBuffer;
        }
    }

    return true;
}

void TrackerSettingsDatabase::dump()
{
    const PPDictionaryKey* theKey = dictionary.getFirstKey();

    while (theKey)
    {
        theKey = dictionary.getNextKey();
    }
}